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What is the Ds\Set intersect() function in PHP?

Kainat Asif

Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

The Ds\Set::intersect() function in PHP finds the intersection of two sets. The intersection of two sets is a set that contains the elements that are common in both sets.

Syntax

The Ds\Set::intersect() function can be declared as shown in the code snippet below:

Ds\Set public Ds\Set::intersect ( Ds\Set $set )

Parameter

The Ds\Set::intersect() takes the following parameter:

  • set: The second set to take intersection with the first set.

Return value

The Ds\Set::intersect() function returns the intersection of the sets, i.e., a set containing both sets’ elements.

Example

Consider the code snippet below, which demonstrates the use of the Ds\Set::intersect() function:

<?php
$set1 = new \Ds\Set([1, 2, 3, 4]);
$set2 = new \Ds\Set([3, 4, 5, 6]);
echo("Intersection of set1 and set2: \n");
print_r($set1->intersect($set2));
?>
Intersection of set1 and set2

Explanation

Two sets set1 and set2 are declared in line 3 and line 5 respectively. The Ds\Set::intersect() function is used in line 9 to find intersection of set1 and set2.

RELATED TAGS

php
communitycreator
intersect()

Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

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